This calculator outputs the how fast the Fiat 500 Abarth can go in each gear as calculated by the gear ratios, engine redline and tire size.
The ultimate top speed may be limted by the power, drag and aerodynamics of each individual car.

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Tire Size(345/30/20)

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OR

Tire Diameter(inches)

Final Drive Ratio

Redline (RPM)

1st Gear

2nd Gear

3rd Gear

4th Gear

5th Gear

6th Gear

7th Gear

8th Gear

RPM

1st Gear

2nd Gear

3rd Gear

4th Gear

5th Gear

6th Gear

7th Gear

8th Gear

500

2.66

4.65

6.85

9

11.93

0

0

0

600

3.19

5.58

8.22

10.8

14.32

0

0

0

700

3.73

6.51

9.58

12.6

16.71

0

0

0

800

4.26

7.44

10.95

14.4

19.09

0

0

0

900

4.79

8.37

12.32

16.2

21.48

0

0

0

1000

5.32

9.3

13.69

18

23.87

0

0

0

1100

5.86

10.23

15.06

19.8

26.25

0

0

0

1200

6.39

11.16

16.43

21.6

28.64

0

0

0

1300

6.92

12.09

17.8

23.4

31.03

0

0

0

1400

7.45

13.02

19.17

25.21

33.41

0

0

0

1500

7.99

13.95

20.54

27.01

35.8

0

0

0

1600

8.52

14.88

21.91

28.81

38.19

0

0

0

1700

9.05

15.81

23.28

30.61

40.57

0

0

0

1800

9.58

16.74

24.65

32.41

42.96

0

0

0

1900

10.12

17.67

26.02

34.21

45.35

0

0

0

2000

10.65

18.6

27.38

36.01

47.73

0

0

0

2100

11.18

19.53

28.75

37.81

50.12

0

0

0

2200

11.71

20.46

30.12

39.61

52.51

0

0

0

2300

12.25

21.39

31.49

41.41

54.89

0

0

0

2400

12.78

22.32

32.86

43.21

57.28

0

0

0

2500

13.31

23.25

34.23

45.01

59.67

0

0

0

2600

13.84

24.18

35.6

46.81

62.05

0

0

0

2700

14.38

25.11

36.97

48.61

64.44

0

0

0

2800

14.91

26.04

38.34

50.41

66.83

0

0

0

2900

15.44

26.97

39.71

52.21

69.22

0

0

0

3000

15.97

27.9

41.08

54.01

71.6

0

0

0

3100

16.5

28.83

42.45

55.81

73.99

0

0

0

3200

17.04

29.76

43.82

57.61

76.38

0

0

0

3300

17.57

30.69

45.18

59.41

78.76

0

0

0

3400

18.1

31.62

46.55

61.21

81.15

0

0

0

3500

18.63

32.55

47.92

63.01

83.54

0

0

0

3600

19.17

33.48

49.29

64.81

85.92

0

0

0

3700

19.7

34.41

50.66

66.61

88.31

0

0

0

3800

20.23

35.34

52.03

68.41

90.7

0

0

0

3900

20.76

36.27

53.4

70.21

93.08

0

0

0

4000

21.3

37.2

54.77

72.01

95.47

0

0

0

4100

21.83

38.13

56.14

73.82

97.86

0

0

0

4200

22.36

39.06

57.51

75.62

100.24

0

0

0

4300

22.89

39.99

58.88

77.42

102.63

0

0

0

4400

23.43

40.92

60.25

79.22

105.02

0

0

0

4500

23.96

41.85

61.62

81.02

107.4

0

0

0

4600

24.49

42.78

62.98

82.82

109.79

0

0

0

4700

25.02

43.71

64.35

84.62

112.18

0

0

0

4800

25.56

44.64

65.72

86.42

114.56

0

0

0

4900

26.09

45.57

67.09

88.22

116.95

0

0

0

5000

26.62

46.5

68.46

90.02

119.34

0

0

0

5100

27.15

47.43

69.83

91.82

121.72

0

0

0

5200

27.69

48.36

71.2

93.62

124.11

0

0

0

5300

28.22

49.29

72.57

95.42

126.5

0

0

0

5400

28.75

50.22

73.94

97.22

128.88

0

0

0

5500

29.28

51.15

75.31

99.02

131.27

0

0

0

5600

29.82

52.08

76.68

100.82

133.66

0

0

0

5700

30.35

53.01

78.05

102.62

136.04

0

0

0

5800

30.88

53.94

79.42

104.42

138.43

0

0

0

5900

31.41

54.87

80.78

106.22

140.82

0

0

0

6000

31.95

55.8

82.15

108.02

143.2

0

0

0

6100

32.48

56.73

83.52

109.82

145.59

0

0

0

6200

33.01

57.66

84.89

111.62

147.98

0

0

0

6300

33.54

58.59

86.26

113.42

150.36

0

0

0

6400

34.07

59.52

87.63

115.22

152.75

0

0

0

6500

34.61

60.45

89

117.02

155.14

0

0

0

RPM

1st Gear

2nd Gear

3rd Gear

4th Gear

5th Gear

6th Gear

7th Gear

8th Gear

Some additional information on how these are calculated:

When D is the diameter of the tire, the car moves forward a distance πD with each revolution of the tire. If there are F revolutions per unit of time, it moves forward at a speed of πD´F per unit of time. If D is in inches and F is in revolutions per minute (rpm), the above result will be in inches per minute. There are 63,360 inches in a mile and 60 minutes in an hour, so one inch per minute equals 60/63360 miles per hour or 1/1056 mph. So we have the following formula:

V(mph) = D(in) ´ F(rpm) ´ (π/1056)

In the automotive industry, the coefficient 1056/π is usually taken to be equal to 336 (exactly it is 336.1352398...) and the formula corresponding to the above is:

(mph)(gear ratio)(336) = (tire diameter in inches)(rpm)

With the above numerical approximation, both formulas are identical if we consider that (rpm)/(gear ratio) is the rate of rotation of the tires. So the "gear ratio" as the number of rotations of the driveshaft for each turn of the tire. This ratio is normally more than 1, except in overdrive gear. So, calling R the "gear ratio", your final answer is:

V(mph) = D(in) ´ F(rpm) ´ (π/1056) / R

or, approximately: V = (D ´ F) / (336 ´ R)

where V is the velocity (in mph), D the tire diameter (in inches), F the engine rpm, and R the gear ratio.